/* --- Component Isolation & Variables --- */
/* Variables are scoped to the wrapper to prevent global conflicts */
.dcourse-wrapper {
    --dcourse-color-orange: #ce4812;
    --dcourse-color-purple: #6a0dad;
    --dcourse-color-green: #29b800;
    --dcourse-color-yellow: #ecb700;
    
    --dcourse-text-dark: #333333;
    --dcourse-text-muted: #555555;
    --dcourse-bg-page: #f9f9f9;
    --dcourse-bg-card: #ffffff;
    --dcourse-border-divider: #e0e0e0;

    /* Base styling moved from body to wrapper */
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--dcourse-bg-page);
    display: flex;
    justify-content: center;
    padding: 40px 20px;
    width: 100%;
    
    /* Failsafe to prevent horizontal scrolling */
    max-width: 100%;
    overflow-x: hidden;
}

/* Safe reset that includes the main wrapper and only applies to this component */
.dcourse-wrapper,
.dcourse-wrapper *,
.dcourse-wrapper *::before,
.dcourse-wrapper *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box; /* This ensures width and padding don't conflict */
}

/* --- Layout: Container --- */
.dcourse-container {
    display: grid;
    /* Desktop: 4 columns */
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    width: 100%;
    max-width: 1400px;
    padding: 20px;
    /* This soft grey shadow helps define the overall grid area slightly */
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

/* --- Card Styles --- */
.dcourse-card {
    display: flex;
    flex-direction: column;
    background-color: var(--dcourse-bg-card);
    width: 100%;
    
    /* *** ADDED FIX: Explicit Box Shadow for visible depth *** */
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.dcourse-image-wrapper {
    width: 100%;
    padding: 3px; 
    margin-bottom: 25px;
    background-color: #fff;
}

.dcourse-image-wrapper img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

/* --- Card Specific Color Themes --- */
/* Orange */
.dcourse-card-orange .dcourse-image-wrapper { border: 3px solid var(--dcourse-color-orange); }
.dcourse-card-orange .dcourse-btn { background-color: var(--dcourse-color-orange); }

/* Purple */
.dcourse-card-purple .dcourse-image-wrapper { border: 3px solid var(--dcourse-color-purple); }
.dcourse-card-purple .dcourse-btn { background-color: var(--dcourse-color-purple); }

/* Green */
.dcourse-card-green .dcourse-image-wrapper { border: 3px solid var(--dcourse-color-green); }
.dcourse-card-green .dcourse-btn { background-color: var(--dcourse-color-green); }

/* Yellow */
.dcourse-card-yellow .dcourse-image-wrapper { border: 3px solid var(--dcourse-color-yellow); }
.dcourse-card-yellow .dcourse-btn { background-color: var(--dcourse-color-yellow); }

/* --- Content & Typography --- */
.dcourse-card-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0 10px 20px 10px;
}

.dcourse-card-title {
    font-size: 15px;
    color: var(--dcourse-text-muted);
    font-weight: 600;
    margin-bottom: 15px;
    line-height: 1.3;
    min-height: 39px; 
    display: flex;
    align-items: center;
    justify-content: center;
}

.dcourse-card-price {
    font-size: 16px;
    font-weight: 700;
    color: var(--dcourse-text-dark);
    margin-bottom: 20px;
}

.dcourse-divider {
    width: 90%;
    border: none;
    border-top: 1px solid var(--dcourse-border-divider);
    margin-bottom: 25px;
}

/* --- Buttons --- */
.dcourse-button-group {
    display: flex;
    gap: 10px;
    justify-content: center;
    width: 100%;
}

.dcourse-btn {
    color: #ffffff;
    border: none;
    padding: 10px 0;
    width: 85px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 3px;
    transition: opacity 0.2s ease, transform 0.1s ease;
    /* Soft shadow on the buttons themselves */
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.dcourse-btn:hover {
    opacity: 0.9;
}

.dcourse-btn:active {
    transform: translateY(1px);
}

/* --- Responsive Breakpoints --- */

/* Tablet Landscape and below */
@media screen and (max-width: 1024px) {
    .dcourse-container {
        grid-template-columns: repeat(2, 1fr);
        max-width: 800px;
    }
}

/* Mobile Devices */
@media screen and (max-width: 767px) {
    .dcourse-container {
        grid-template-columns: 1fr;
        max-width: 400px;
        padding: 15px;
    }
    
    .dcourse-image-wrapper img {
        height: 220px;
    }
}